Mary Elizabeth King Johnson, PA-C
Physician Assistant · Saint Louis, MO
Mary Elizabeth King Johnson, PA-C is a physician assistant with a practice address in Saint Louis, Missouri, and NPI 1992944904, issued on Feb 13, 2009. Check the license (Missouri 2009001275, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Elizabeth King Johnson
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 2009001275 MO
085003419 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1040 N Mason RD, Saint Louis, MO 63141
- Phone
- (314) 469-7246
- Enumerated
- Feb 13, 2009
- Record last updated
- Jul 21, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100526000012); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 1,790 in Missouri → Look up another NPI →
Also registered at 1040 N Mason RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ira Kodner, MDColon & Rectal Surgery Physician1760408983
- Phillip Korenblat, M.D.Specialist1063555860
- Melissa Korenblat-Hanin, MSW, LCSWClinical Social Worker1568792539
- Kathleen Lobello, ANPAdult Health Nurse Practitioner1134147648
Verify Mary Elizabeth King Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2009001275Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average physician assistant in 2024
53 Medicare Part D claims for 49 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 14 claims were for opioids.
Most prescribed
- Meloxicam16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $31.08
2 payments; by number, the most common kind was food and beverage; the largest payer was Organogenesis Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- St Peters Bone And Joint Surgery IncO Fallon, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Elizabeth King Johnson among 1,790 physician assistant records in Missouri
Mary Elizabeth King Johnson, PA-C is one of 1,790 physician assistant records with a practice address in Missouri. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 21% of them.
- NPI issued2009 · 21% of these records are older, 77% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2009 · median 2019 among the 1,250 with a school on file
- Record last updated2010 · 32% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
498 physician assistant records list a practice address in Saint Louis
They are 498 of the 27,605 NPPES records with a practice address in Saint Louis, and 1,790 physician assistant records in Missouri.
All 1,790 in Missouri → Every provider in Saint Louis → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Christopher Berner, P.A.-CSaint Louis, MO 631411376674176
- Lindsey Blaha, PA-CSaint Louis, MO 631411609802123
- Heather Brinkman, PHY ASSIST CERTSaint Louis, MO 631411992718522
- Michelle BuschSaint Louis, MO 631411760585087
- Kara Cardinal, PASaint Louis, MO 631411619065331
- Amie Chang, P.A.Creve Coeur, MO 631411366557209
- Kara Harres, PASaint Louis, MO 631411306920277
- Shirley Haynes, PA-CSaint Louis, MO 631411225003551
Common questions
What is Mary Elizabeth King Johnson, PA-C's NPI number?
Mary Elizabeth King Johnson, PA-C's National Provider Identifier (NPI) is 1992944904, issued on Feb 13, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mary Elizabeth King Johnson, PA-C located?
The NPPES record lists a practice address at 1040 N Mason RD, Saint Louis, MO, 63141. Phone: (314) 469-7246. Providers update this record themselves, so call before visiting.
How can I verify Mary Elizabeth King Johnson, PA-C's license?
NPPES lists Missouri license number 2009001275, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Elizabeth King Johnson, PA-C prescribe under Medicare Part D?
In 2024, Mary Elizabeth King Johnson, PA-C had 53 Medicare Part D claims for 49 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Mary Elizabeth King Johnson, PA-C's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.